diff options
author | obrien <obrien@FreeBSD.org> | 2009-01-01 05:39:43 +0000 |
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committer | obrien <obrien@FreeBSD.org> | 2009-01-01 05:39:43 +0000 |
commit | 87d6fde760865f6a73395e6a7a56b3a608ea99b1 (patch) | |
tree | 642b6c9d31fbc0f98b1a7fac09aa341daf3ddb15 /usr.bin/file/ascmagic.c | |
parent | 99e8b7f6d178e1403522ce383957e9c576b7c3ad (diff) | |
download | FreeBSD-src-87d6fde760865f6a73395e6a7a56b3a608ea99b1.zip FreeBSD-src-87d6fde760865f6a73395e6a7a56b3a608ea99b1.tar.gz |
Flatten the file vendor area.
Remove the svn:keywords property from the vendor files.
Diffstat (limited to 'usr.bin/file/ascmagic.c')
-rw-r--r-- | usr.bin/file/ascmagic.c | 124 |
1 files changed, 0 insertions, 124 deletions
diff --git a/usr.bin/file/ascmagic.c b/usr.bin/file/ascmagic.c deleted file mode 100644 index 7ba9ae1..0000000 --- a/usr.bin/file/ascmagic.c +++ /dev/null @@ -1,124 +0,0 @@ -/* - * ASCII magic -- file types that we know based on keywords - * that can appear anywhere in the file. - * - * Copyright (c) Ian F. Darwin, 1987. - * Written by Ian F. Darwin. - * - * This software is not subject to any license of the American Telephone - * and Telegraph Company or of the Regents of the University of California. - * - * Permission is granted to anyone to use this software for any purpose on - * any computer system, and to alter it and redistribute it freely, subject - * to the following restrictions: - * - * 1. The author is not responsible for the consequences of use of this - * software, no matter how awful, even if they arise from flaws in it. - * - * 2. The origin of this software must not be misrepresented, either by - * explicit claim or by omission. Since few users ever read sources, - * credits must appear in the documentation. - * - * 3. Altered versions must be plainly marked as such, and must not be - * misrepresented as being the original software. Since few users - * ever read sources, credits must appear in the documentation. - * - * 4. This notice may not be removed or altered. - */ - -#include <stdio.h> -#include <string.h> -#include <ctype.h> -#include <stdlib.h> -#include <unistd.h> -#include "file.h" -#include "names.h" - -#ifndef lint -static char *moduleid = - "@(#)$Id: ascmagic.c,v 1.21 1997/01/15 17:23:24 christos Exp $"; -#endif /* lint */ - - /* an optimisation over plain strcmp() */ -#define STREQ(a, b) (*(a) == *(b) && strcmp((a), (b)) == 0) - -int -ascmagic(buf, nbytes) -unsigned char *buf; -int nbytes; /* size actually read */ -{ - int i, has_escapes = 0; - unsigned char *s; - char nbuf[HOWMANY+1]; /* one extra for terminating '\0' */ - char *token; - register struct names *p; - - /* - * Do the tar test first, because if the first file in the tar - * archive starts with a dot, we can confuse it with an nroff file. - */ - switch (is_tar(buf, nbytes)) { - case 1: - ckfputs("tar archive", stdout); - return 1; - case 2: - ckfputs("POSIX tar archive", stdout); - return 1; - } - - /* - * for troff, look for . + letter + letter or .\"; - * this must be done to disambiguate tar archives' ./file - * and other trash from real troff input. - */ - if (*buf == '.') { - unsigned char *tp = buf + 1; - - while (isascii(*tp) && isspace(*tp)) - ++tp; /* skip leading whitespace */ - if ((isascii(*tp) && (isalnum(*tp) || *tp=='\\') && - isascii(tp[1]) && (isalnum(tp[1]) || tp[1] == '"'))) { - ckfputs("troff or preprocessor input text", stdout); - return 1; - } - } - if ((*buf == 'c' || *buf == 'C') && - isascii(buf[1]) && isspace(buf[1])) { - ckfputs("fortran program text", stdout); - return 1; - } - - - /* Make sure we are dealing with ascii text before looking for tokens */ - for (i = 0; i < nbytes; i++) { - if (!isascii(buf[i])) - return 0; /* not all ASCII */ - } - - /* look for tokens from names.h - this is expensive! */ - /* make a copy of the buffer here because strtok() will destroy it */ - s = (unsigned char*) memcpy(nbuf, buf, nbytes); - s[nbytes] = '\0'; - has_escapes = (memchr(s, '\033', nbytes) != NULL); - while ((token = strtok((char *) s, " \t\n\r\f")) != NULL) { - s = NULL; /* make strtok() keep on tokin' */ - for (p = names; p < names + NNAMES; p++) { - if (STREQ(p->name, token)) { - ckfputs(types[p->type], stdout); - if (has_escapes) - ckfputs(" (with escape sequences)", - stdout); - return 1; - } - } - } - - /* all else fails, but it is ASCII... */ - ckfputs("ASCII text", stdout); - if (has_escapes) { - ckfputs(" (with escape sequences)", stdout); - } - return 1; -} - - |